Because you : Injured it....there are nerve endings that were injured, a swelling response likely occured....it's no different then if your punched in the arm...this hurts also...
Answered 12/30/2014
3.4k views
Ankle Bruise: it hurts because you injured the tissue enough to cause it to bleed which causes the bruise. In medical terms we call a bruise a hematoma, which is blood in the tissues.
Answered 12/30/2014
3.4k views
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